Deck size
48-inch decks: three 17-inch blades or two 25-inch blades
Oregon lists three 17-1/16 in blades for one 48-inch cut and two 25 in blades for another. Why deck width never gives you blade length or count.
Also listed as 48 in, 48"
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Short answer
Two 48-inch cuts, two answers: Oregon's 92-105 is a 17-1/16 in blade with a 7-point star hole that takes three blades for a 48-inch cut, while its 91-544 is a 25 in low-lift blade used two per 48-inch cut. Never divide the deck width by a blade count. Match the part number your mower's maker or Oregon lists.
Key facts
- Mower types
- John Deere lawn tractors: Oregon's 92-105 fit guide includes the D140, LA130 and X140. John Deere's S240 lawn tractor is also offered with a 48-inch deck.[1][2]
- Blades per deck
- Oregon 92-105: three per 48-inch cut. Oregon 91-544: two per 48-inch cut (three per 72-inch cut).[1][3]Same width, different counts.
- Blade lengths makers list
- Oregon 92-105: 17-1/16 in. Oregon 91-544: 25 in. Oregon measures length diagonally from the corners of the blade.[1][3]
- Blade sets made for it
- Oregon 92-105 mulching blade cross-references John Deere GX21784, GX21785, GX21786, GY20852, AM137757, AM137758, AM141035 and AM141036. Oregon 91-544 low-lift blade cross-references makers including Grasshopper, Bush Hog and Country Clipper.[1][3]Aftermarket cross-references by Oregon, for the listed applications only.
- Bags and baggers listed for it
- Not confirmedNo 48-inch bagger in the sources read.
- Mulching kits and plugs
- John Deere S240 48-inch deck: MulchControl kit BUC10705; Deere says the baffle can be opened or closed with the Power Flow blower installed.[2]
- Deck styles
- Not confirmedNo source read separates 48-inch deck styles.
- Deck wheels listed for it
- Not confirmedNo fact-checked wheel names a 48-inch deck.
- Not confirmed
- Not confirmed48-inch baggers, deck styles, wheels and blade sets sold as sets.
Watch out for
- Never work out blade length from deck width: Oregon lists three 17-1/16 in blades for one 48-inch cut and two 25 in blades for another.
- The 92-105 has a 7-point star hole and the 91-544 a 1/2 in hole. Never modify a hole to fit.
What fits
Product details below are the seller's own description unless a source is shown. Pick the variant named for each item.
Deck wheel (Oregon)
Oregon 72‑119 deck wheel, 5 x 2 in, for John Deere decksChoose Oregon 72-119, one 5 x 2 in wheel.
Oregon lists it for 42, 48 and 72-inch decks on John Deere L100, L110, L120 and G100 series tractors, replacing GX10168 and GX2554H.
Mulch kit (Husqvarna)
Husqvarna 531 30 96‑42 (HU48) mulch kit for 48 in stamped decks (plate, mulching blades and hardware)Choose part 531 30 96-42.
For Husqvarna 48-inch stamped decks only, such as the TS 148X and YTH24V48: a mulch plate, a set of mulching blades and hardware.
This page exists to show that one width can take different blade counts and lengths.
Questions
How many blades does a 48-inch deck use?
It depends on the deck. Oregon lists its 92-105 at three blades per 48-inch cut and its 91-544 at two per 48-inch cut.[1][3]
How long is a 48-inch mower blade?
There is no single length. Oregon's 92-105 is 17-1/16 in and its 91-544 is 25 in, both for 48-inch cuts, measured diagonally from the corners.[1][3]
Which John Deere blades does the Oregon 92-105 replace?
Oregon cross-references John Deere GX21784, GX21785, GX21786, GY20852, AM137757, AM137758, AM141035 and AM141036. Confirm your model and deck.[1]